Anna M Gunelson, Kwang-Soo Kim, Connolly G Steigerwald, Devorah Segal, Nicolas J Abreu, Jason J Yi
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引用次数: 0
Abstract
The loss of maternal UBE3A causes Angelman syndrome whereas its duplication is associated with a heterogeneous neurodevelopmental disorder. Here, we describe two affected brothers who possess a novel UBE3AL734S variant that is not present in two neurotypical siblings. The UBE3AL734S variant was confirmed to be maternally inherited, and the affected individuals exhibited early global developmental delay, ongoing learning difficulties, and autistic features. Their phenotypes were inconsistent with Angelman syndrome. Biochemical characterization showed the UBE3AL734S variant causes a dramatic increase in the activity of the UBE3A enzyme, suggesting that a gain in UBE3A activity is the driver of neurodevelopmental disease. Our observations document an emerging class of neurodevelopmental disorders caused by gain-of-function mutations in UBE3A.
期刊介绍:
The Journal of Human Genetics is an international journal publishing articles on human genetics, including medical genetics and human genome analysis. It covers all aspects of human genetics, including molecular genetics, clinical genetics, behavioral genetics, immunogenetics, pharmacogenomics, population genetics, functional genomics, epigenetics, genetic counseling and gene therapy.
Articles on the following areas are especially welcome: genetic factors of monogenic and complex disorders, genome-wide association studies, genetic epidemiology, cancer genetics, personal genomics, genotype-phenotype relationships and genome diversity.